Make FWK start a wifi scan if supplicant forgets.
Make FWK start a wifi scan if supplicant forgets.

Waits 15sec after getting a DISCONNECTED or INACTIVE state.  Also tracks
the number of supplicant state transitions.  After the period is up
if we haven't received any more supplicant state transitions, it requests a scan.

bug: 2168081

xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base,xorware/android_frameworks_base